The ``xiaomi_ble`` sensor platform lets you track the output of Xiaomi Bluetooth Low Energy devices using the :doc:`/components/esp32_ble_tracker`. This component will track, for example, the temperature, humidity, moisture, conductivity, illuminance, formaldehyde, mosquito tablet and battery level of the device every time the sensor sends out a BLE broadcast. Contrary to other implementations, ``xiaomi_ble`` listens passively to advertisement packets and does not pair with the device. Hence ESPHome has no impact on battery life. Thus, if you only use such sensors, you can safely set ``scan_parameters.active: false`` in ``esp32_ble_tracker`` configuration, to save from spamming your RF environment with useless scan requests.
You may alternatively use ESPHome's :doc:`/components/bluetooth_proxy` component to forward sensor data to Home Assistant and have Mija devices configured using its own Mija BLE component. This should work for the devices flashed with `PVVX MiThermometer <https://github.com/pvvx/ATC_MiThermometer>`__ custom firmware, as well as the regular, stock firmware.
Hygro thermometer, round body, segment LCD, broadcasts temperature, humidity and battery level. This device is also known as MJ_HT_V1. In HA's native Xiaomi BLE integration, the device info page shows it as "MJ_HT_V1 (LYWSDCGQ by Xiaomi)".
Hygro thermometer, square body, e-ink display, encrypted, broadcasts temperature, humidity and battery status. Requires a bindkey in order to decrypt the received data (see :ref:`obtaining_the_bindkey`).
Cleargrass (Qingping) alarm clock, segment LCD, encrypted, broadcasts temperature, humidity and battery status. Requires a bindkey in order to decrypt the received data (see :ref:`obtaining_the_bindkey`).
Cleargrass (Qingping) Temp & RH Lite, round body, segment LCD, encrypted, broadcasts temperature, humidity and battery status. Requires a bindkey in order to decrypt the received data (see :ref:`obtaining_the_bindkey`).
The measurements are broadcast every 10-15 minutes.
Mosquito Repellent Smart Version, broadcasts the tablet resource level, on/off state and battery level, implemented as a hybrid sensor, needs both ``sensor`` and ``binary_sensor`` in config.
Xiaomi Philips BLE night light, broadcasts motion detection (detected/clear, on/off), default timeout is 5s, implemented as a hybrid sensor, needs both ``sensor`` and ``binary_sensor`` in config.
Xiaomi Yeelight night light, in-shape replacement of MJYD02YL with BLE, broadcasts light on/off status, motion detection, idle time since last motion event and battery status. Requires a bindkey in order to decrypt the received data (see :ref:`obtaining_the_bindkey`). Implemented as a hybrid sensor, needs both ``sensor`` and ``binary_sensor`` in config.
Qingping motion & ambient light sensor. Broadcasts motion detection, idle time since last motion event, lux value and battery status. Requires a bindkey in order to decrypt the received data (see :ref:`obtaining_the_bindkey`).
After uploading, the ESP32 will immediately try to scan for BLE devices. When it detects a new sensor, it will automatically parse the BLE message print a message like this one:
It can sometimes take some time for the first BLE broadcast to be received. Once the device has been found, copy the address ``XX:XX:XX:XX:XX:XX`` into a new platform entry like shown in the example configurations.
To set up an encrypted device such as the LYWSD03MMC (with Xiaomi stock firmware) and CGD1, you first need to obtain the bind key. The ``xiaomi_ble`` sensor component is not able to automatically generate a bindkey so other workarounds are necessary.
If the LYWSD03MMC or MHO-C401 sensor is operated with the Xiaomi stock firmware, you can use the `TeLink flasher application <https://atc1441.github.io/TelinkFlasher.html>`__ to easily generate a new bind key and upload the key to the device without the need to flash a new firmware (see figure). For this, you load the flasher `webpage <https://atc1441.github.io/TelinkFlasher.html>`__ with a `supported browser <https://github.com/WebBluetoothCG/web-bluetooth/blob/master/implementation-status.md>`__ and connect the device by pressing "Connect". After the connection is established, you press the "Do Activation" button and the new key will be shown in the "Mi Bind Key" field. The key can be copied directly into the sensor YAML configuration.
The new bind key will work with ESPHome, but the Mi Home app will not recognise the sensor anymore once the device has been activated by the TeLink flasher application. To use the sensor again with the Xiaomi Mi Home app, the device needs to be removed and then re-added inside the Mi Home app.
The method to obtain a new bind key for the CGDK2 sensor is similar to the method for the LYWSD03MMC sensor, except a modified version of the flasher application is used.
For this, you load the `application <https://zaluthar.github.io/TelinkFlasher.html>`__ with a `supported browser <https://github.com/WebBluetoothCG/web-bluetooth/blob/master/implementation-status.md>`__ and connect the device by pressing "Connect". After the connection is established, you press the "Do Activation" button and the new key will be shown in the "Mi Bind Key" field. The key can be copied directly into the sensor YAML configuration.
The easiest method (confirmed to work for LYWSD03MMC) is to use the `Telink flasher method <https://github.com/pvvx/ATC_MiThermometer>`__. The accompanying `video
<https://www.youtube.com/watch?v=NXKzFG61lNs>`_ shows how to wirelessly flash a LYWSD03MMC, or how to obtain the bind key of the stock firmware (watch till around 13:10). The custom firmware allows you to change several settings of the device, including the smiley and the advertising interval. Follow the instructions on the site using Telink Flasher - best results with a Bluetooth-enabled Android phone. Note that with ``pvvx`` default settings advertisment is set to ``Custom`` with no encryption. No need for ``bind_key`` in this case, you can just add the sensors to your ESPHome config as described above.
The other option is to use the original Mi Home app to add the sensor once. While adding the device, a new key is generated and uploaded into the Xiaomi cloud and to the device itself. Currently a chinese server needs to be selected as the rest of the world doesn't support most of these devices yet. Once generated, the key will not change again until the device is removed and re-added in the Xiaomi app.
The easiest method to retrieve the bindkey from the cloud is to use the `Cloud Tokens Extractor <https://github.com/PiotrMachowski/Xiaomi-cloud-tokens-extractor>`__, written by one of Home Assistant users. If you prefer to not use the executable, read `here <https://www.home-assistant.io/integrations/xiaomi_miio/#xiaomi-cloud-tokens-extractor>`__.
2b.
Another option is to use a SSL packet sniffer. It can be setup on either an Android phone or the iPhone. A good choice for Android is the `Remote PCAP <https://play.google.com/store/apps/details?id=com.egorovandreyrm.pcapremote&hl=en>`__ in combination with `Wireshark <https://www.wireshark.org/>`__. A tutorial on how to setup the Remote PCAP packet sniffer can be found `here <https://egorovandreyrm.com/pcap-remote-tutorial/>`__ and `here <https://github.com/ahpohl/xiaomi_lywsd03mmc>`__. Instructions how to obtain the key using an iPhone are `here <https://github.com/custom-components/sensor.mitemp_bt/blob/master/faq.md#my-sensors-ble-advertisements-are-encrypted-how-can-i-get-the-key>`__. Once the traffic between the Mi Home app and the Xiaomi servers has been recorded, the bind key will show in clear text:
Use a board with an Ethernet connection to the network, to offload ESP32's radio module from WiFi traffic, this gains performance on Bluetooth side.
To maximize the chances of catching advertisements of the sensors, you can set ``interval`` equal to ``window`` in :doc:`/components/esp32_ble_tracker` scan parameter settings:
Avoid placing the ESP node in racks, close to routers/switches or other network equipment as EMI interference will degrade Bluetooth signal reception. For best results put as far away as possible, at least 3 meters distance from any other such equipment.
You should at least protect your sensors with a custom pairing PIN code. Choose a method employing bindkey in order to use encrypted communication over the air.
